Leeuw, F. d., Bogman, F., & European Environment Agency. (2001). Air pollution by ozone in Europe in summer 2001: Overview of exceedances of EC ozone threshold values during the summer season April-August 2001. Luxembourg: Office for Official Publications of the European Communities.
Παραπομπή Chicago StyleLeeuw, Frank de., Ferdinand Bogman, and European Environment Agency. Air Pollution By Ozone in Europe in Summer 2001: Overview of Exceedances of EC Ozone Threshold Values During the Summer Season April-August 2001. Luxembourg: Office for Official Publications of the European Communities, 2001.
Παραπομπή MLALeeuw, Frank de., Ferdinand Bogman, and European Environment Agency. Air Pollution By Ozone in Europe in Summer 2001: Overview of Exceedances of EC Ozone Threshold Values During the Summer Season April-August 2001. Luxembourg: Office for Official Publications of the European Communities, 2001.